Check the listing for details. CDH Windowed Piston Set & Long Connecting Rod - 66cc/80cc Gas Motorized Bicycle. Condition: New. Listed at 29.79 USD. Windowed Piston Set ： Key Product Features The windowed 66cc piston kit is only for 80cc/66cc engine kitsHigh Hole Piston; compatible with long connecting rod ONLY;DOSE NOT WORK WITH stocked manifold intake,Buyers must use high performance intake;47mm piston set including 1 high hole window piston 47mm, 2 piston rings,1 piston pin and 2 clips for your new cylinder build or as replacements.Work only with better performance manifold intake such as G2 reed,dio reed etc and better performance carburetor such as RT carburetor, CNS carburetor or other onesClips installation video: https://www.youtube.com/shorts/iZlvsQEecNcProduct Description The CDHPOWER WINDOWED PISTON kits includes:66cc/80cc high hole window pistonpiston ring set(the ring is 2mm)piston retaining clipspiston pinLong Connecting Rod ZL40 Set：Key Product Features - Connecting rod set ZL40MM High motor - Including up and down bearing - Marked "ZL40MM" Product description Connecting rod ZL40 set fit the 66cc/80cc motor Instead of the old one The windowed 66cc piston kit is only for 80cc/66cc engine kitsHigh Hole Piston; compatible with long connecting rod ONLY;DOSE NOT WORK WITH stocked manifold intake,Buyers must use high performance intake;Work only with better performance manifold intake such as G2 reed,dio reed etc and better performance carburetor such as RT carburetorThanks for your trust and choosing CDHpowerCDHpower is registered officially in year 2012 and started business in year 2008. is the original,Reliable,Legal and Honest Company with USA Brand CDHpower supplying many merchandises such as 2 cycle and 4 cycle Bicycle Engine Kit,Spare Parts of gas engine kit including higher performance parts and CNC machined parts, CDH Gas Bike,CDH Bicycle,spare parts of bicycle and some products developed and being developed in China.CDHpower is the FIRST CHINESE company engaging in Volume producition on CDH GT gas bikes and CDH gas frame In China!CDHpower offers the best selection of gas motor kit, gas bike, gas frame ,bicycles, spare parts and many other products! You'll find an abundance of exciting options to choose, and our checkout process is quick, safe, and secured.Your order plcaed today, you'll get your item quickly in 1 to 2 Business Days. We will try our best to save cost for you and offer free or low-cost shipping on nearly every item. Thank you for looking, if you have any questions, feel free to ask and I will do my best to get back to you promptly!Products usually shipped on the second business day and you will receive message of tracking id.CDHPOWER is registered officially in year 2012 and started business in year 2008, we can provide engine kits, high performance spare parts of engine, motorized bicycle and spare parts of bike.